MODIFIERS & CONTROLLERS
Doc Q7.0
143
Sequencer
7.3.3
Like any step-sequencer, that of the Axe-Fx II generates repetitive control patterns by looping through
a series of steps or “stages,” each of which outputs a specified value. The sequence can be run at a
specified rate or be synchronized to the global tempo. Press the front panel
button to find
the SEQUENCER page for the current preset.
RATE
– Sets the rate at which the sequence is stepped through. At 1 Hz, each step will last for 1 second.
When
RATE
is shown in parenthesis, it is being controlled by the tempo parameter (below). Set
TEMPO
to
“NONE” for manual control.
TEMPO
– Sets the sequencer rate in rhythmic relation to the global tempo. For example, if the tempo is set
to “1/16” the sequencer will play 16 steps per measure (4 beats). To ignore global tempo, set this to “NONE.”
RUN
– This parameter starts and stops the sequencer. When the sequencer is stopped, it remains at the value
set for
STAGE 1
(see below). When using a MIDI CC via an external controller to toggle RUN, a value of 70 or
higher will START the LFO, and a value of 57 or lower will STOP the LFO (assuming default modifier settings for
IN/MAX/START/MID/END/SLOPE).
Tip:
A Sequencer that is locked to tempo can still “drift” from another system or device. To stay locked to “song position,” just
stop and restart periodically from your DAW/sequencer with a quick pair of OFF/ON messages at regular intervals. Assign
the CC# to an External controller (p. 144) and assign this as the source of the modifier on the RUN parameter.
STAGES
–Sets the number of steps in the looped sequence from 1–32. For example, if STAGES is set to “3”,
the sequencer will play steps 1, 2, and 3 in constant rotation: 1,2,3,1,2,3,1,2,3,1,2,3…
STAGE #
– Each of the
STAGE
parameters sets the value for one step of the sequence. You can randomize the
values of ALL steps in the sequence by pressing ENTER with any STAGE (or the STAGES parameter) selected.
Envelope Follower
7.3.4
The
Envelope Follower
“tracks” the level of the main input signal. The harder you play, the greater a
value it produces. The Envelope Follower is designed to enable “touch-control” of wah, filter, and
other effects, plus “ducking” and other types of dynamics control. Press the front panel
button to find the ENVELOPE page for the current preset.
THRESH
– The threshold controls the sensitivity of the Envelope Follower by setting the level at which
tracking kicks in or out. When the input level is greater than the threshold, the follower tracks it at the attack
rate. When the signal drops below this level, the output of the follower will decay to zero at the release rate.
ATTACK
– The rate at which the follower output follows signals increasing in power.
RELEASE
– The rate at which the follower output follows signals decreasing in power.
GAIN
– The gain control works like a classic “sensitivity” control to set the relationship between incoming
levels and outgoing control signals. By boosting the input of the envelope follower, GAIN allows a weaker
input signal to exert a greater effect.
